Two of my servers which are cross connected have suddenly stopped comunicating through that connectio. I use one server for Apache and the other server for MySQL. The two servers were communicating through the private link for two years WITHOUT any problems. Yesterday, this connection stopped and databases were not reachable. I ssh to the apache server and Ping the other server but got lost packeckts. The results of the ping:



I talked to the technical support and they checked the connection physicall and it is OK. They still could not resolve the problem yet.

Does anyone have an idea where the problem could be?

Thanks.

ethtool eth1

See if both have "link detected"

If so disable the firewall, service iptables stop.

Check routing table "route -n"

Make sure ifconfig has the IP and you can ping it locally



One of those will probably not work or give you a direction to go.

Khalid2008,

In addition to what eth00 recommended, you may want to also check to see if you have ARP for the destination after you attempt to ping it ('arp -an' in Linux/ 'arp -a' in Windows). This would also help determine if a firewall configuration is the problem.

Thanks eth00 and ChrisP for your help.

After discussing this issue with the planet support, it has been decided to replace the cross connection cable and that solved the problem.

Thank you.